#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
using namespace std;
  struct TreeNode {
      int val;
      TreeNode *left;
      TreeNode *right;
      TreeNode() : val(0), left(nullptr), right(nullptr) {}
      TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
      TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}
  };
 
class Solution {
public:
    bool hasPathSum(TreeNode* root, int targetSum) {
        if (root == nullptr)return false;
        if (root->left == nullptr && root->right == nullptr)
            return targetSum == root->val;
        return hasPathSum(root->left, targetSum - root->val) ||
            hasPathSum(root->right, targetSum - root->val);
    }
};
int main()
{
    return 0;
}